HEAT TRANSFER AUGMENTATION IN PLATE FINNED TUBE HEAT EXCHANGERS WITH VORTEX GENERATORS: A COMPARISON OF ROUND AND FLAT TUBES

10.22099/ijstm.2013.1464

Abstract

Heat transfer augmentation and pressure loss penalty caused by vortex generators
(VGs) are numerically studied for finned flat/round tube heat exchangers and compared with
available experimental results. The simulations are performed with the steady three-dimensional
incompressible conditions and a RNG K-ε turbulence model is used. The Reynolds numbers based
on the bulk velocity and the height of channel are selected from 600 to 4050. To com